mostly need help setting up how to do the math for these problems. I also need help with knowing how to find which acid is the strongest. Give the Ka or pKa values that should be entered in the blanks below. pKa = -log10ka ; Ka = 10-pKa (a) hydrocyanic acid: Ka = 4.92 x 10-10 ; pKa = (b) acetic acid: Ka = ; pKa = 4.75 (c) lactic acid: Ka = 8.40 x 10-4 ; pKa = (d) formic acid: Ka = ; pKa = 3.75 (e) Which of these acids is the strongest?

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I mostly need help setting up how to do the math for these problems. I also need help with knowing how to find which acid is the strongest. 

Give the Ka or pKa values that should be entered in the blanks below. pKa = -log10ka ; Ka = 10-pKa

(a) hydrocyanic acid: Ka = 4.92 x 10-10 ; pKa         

(b) acetic acid: Ka         ; pKa = 4.75

(c) lactic acid: Ka = 8.40 x 10-4 ; pKa          

(d) formic acid: Ka         ; pKa = 3.75

(e) Which of these acids is the strongest?

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